I was wondering if anyone could tell me the best nzzle to use for buttercream roses piped straight onto the cupcakes .

Many Thanks

Tracy

A nozzle or tip #104 , #124, 125 or #126 depending the size of rose you wish to make. I've used the #104 and the #125/ HTH

I also use the 104

The rose tips are great for making roses that aren't directly piped onto the cupcake, but you're looking for a 1M or 2D: (right?)
http://cakecentral.com/cake-decorating-ftopict-690563-rose.html+swirl+cupcake

Here are more opinions...

http://cakecentral.com/cake-decorating-ftopict-679997-rose.html+swirl+cupcake

http://cakecentral.com/cake-decorating-ftopict-630530-rose.html+swirl+cupcake

http://cakecentral.com/cake-decorating-ftopict-684886-1m.html

With tip 104: http://www.cakecentral.com/cake-photo_1358470.html

With tip 1M (not the greatest example): http://www.cakecentral.com/cake-photo_1384098.html

thankyou all so much , im off to experiment :0) i hope you all had a lovely xmas & new year x